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496 companies

Harbor District, Inc.

Milwaukee, WI, United StatesUpdated May 2026

Harbor District, Inc. is a non-profit organization leading the revitalization of Milwaukee's Harbor District by connecting people to place, supporting a healthy business community, and improving the natural environment.

Harding ESE, Inc.

United StatesUpdated May 2002

MACTEC, Inc and its subsidiaries Harding ESE and Pacific Environmental Services, are full service environmental consulting and engineering companies drawing on the resources of a nationwide network of offices.

Herbert Engineering Corp.

Alameda, CA, United StatesUpdated May 2002

Herbert Engineering Corp. provides comprehensive ship design, offshore engineering, environmental compliance, and retrofit services with a focus on optimized safety, efficiency, and environmental performance.

Herbosch-Kiere NV

BelgiumUpdated Jun 2000

Herbosch-Kiere NV is a Belgian company specializing in civil and hydraulic engineering, maritime and offshore services, foundations, and environmental projects related to water infrastructure.

Hermont Marine Inc.

Lachine,, Quebec, CanadaUpdated Apr 2004

Hermont Marine ia a North American supplier of cost saving solutions in areas of safety, energy efficiency, and pollution abatement. Our goal is to provide our customers with quality products and expert advice, i.e. to help you meet your operational objectives within environmental constraints.

Hippwrap Containment

San Diego,, CA, United StatesUpdated Feb 2007

HippWrap Containment specializes in shrink-wrap containment systems and protective coverings for environmental protection, storage, transport, and project enclosures with over 35 years of experience.

Hitachi Zosen Corp (Tokyo Head Office)

Chiyoda-ku,, Tokyo, JapanUpdated Dec 2006

Hitachi Zosen Corp is a Japanese company contributing to environmental facilities, machinery, infrastructure, decarbonization technologies, and marine equipment, supporting safe and sustainable society development.

Holyhead Marine Services Ltd

United KingdomUpdated May 2004

Holyhead Marine Services has one of the best equipped and most up to date yards of its size in the country. The capacity to lift up to 100 tonnes and the ability to work on them in environmentally secure buildings added to a skilled and permanent workforce offers an unrivalled service to our customers. The company design, constructs and fits out a wide range of commercial vessels in steel, aluminium and GRP including pilot boats, patrol boats, workboats and tugs. The company also undertakes refit and repairs on commercial craft such as lifeboats, patrol boats, tugs, and pilot boats in the yard in steel, aluminium, GRP and timber. Services to the offshore industry include testing, maintenance and repair of flexible floating hoses and associated equipment for the transfer of oil. Hoses of up to 24" bore with an overall assembled length of 350m can be handled. Facilities are available for testing in accordance with OCIMF rules. The companies Quality Management System has been approved by Lloyds Register Quality Assurance to BS EN ISO 9001:1994

Hood River Extension Service

Hood River, OR, United StatesUpdated May 2026
Training

Oregon State University's Extension Service delivers research-based knowledge and education to strengthen communities, economies, and natural resources across Oregon, including coastal and marine research at its Newport center.

Houseboat Outlet Inc.

Lafayette, LA, United StatesUpdated Oct 2002

Houseboat Outlet Inc. is the designer and manufacturer of one of the most affordable, state of the art, and top-quality U.S. Coast Guard certified type II marine sanitation devices on the market today (THE MSD). THE MSD meets all IMO standards and is at the apex of environmental safety.

HudsonTrident (UK) Limited

Pennsauken, NJ, United StatesUpdated Jan 2005
Training

HudsonAnalytix is an international risk solutions company providing expert risk management and incident response support to the maritime industry, including shipping companies, ports, and government entities.

Hydro Chemicals (UK) Ltd.

Chester, Cheshire, United KingdomUpdated Nov 1998

HydroChem UK specialises in water treatment services and chemical products, providing traditional, advanced and environmentally-friendly solutions across the UK.

HydroChem Industrial Services Inc.

San Francisco, CA, United StatesUpdated May 2026

HydroChem Industrial Services (HPC Industrial) provides industrial cleaning, environmental, and specialty maintenance services including hydroblasting, chemical cleaning, and waste transport.

Hydronamic BV

Papendrecht, NetherlandsUpdated Jul 2005

Hydronamic BV specializes in consultancy services in wet civil engineering, focusing on hydrology, morphology, coastal and river engineering, port construction, environmental engineering, and offshore technology.

Høglund Marine Automasjon AS

Tønsberg, Tønsberg, NorwayUpdated May 2026

Høglund Marine Automasjon AS designs, engineers, and delivers advanced integrated marine power, automation, and digital solutions to enhance vessel performance, safety, and environmental credentials worldwide.

I.H.I Head Office

JapanUpdated Jul 2002

I.H.I is a Japanese company specializing in technology development and business models related to maritime, shipbuilding, and environmental systems, aiming to create sustainable societies through innovation.

IMS Environmental Services

Norfolk, VA, United StatesUpdated Dec 2006
Training

IMS Environmental Services provides spill response, tank and pipeline cleaning, OSHA training, remediation, and environmental consulting services in Norfolk, VA.

IMW Industries Ltd.

Chilliwack, British Columbia, CanadaUpdated Apr 2008

IMW Industries Ltd. is a single-source supplier of CNG/NGV fueling systems, including compressors, dispensers, gas control systems and storage systems. We are dedicated to delivering efficient, high-quality CNG fuelling solutions worldwide. In conjunction, IMW delivers timely after-market service through wholly-owned service centers and a global network of authorized representatives that offers technical support, parts and service. IMW is committed to building long-term relationships by focusing on customer needs and satisfaction. As the only Canadian manufacturer of high-pressure natural gas compressors, IMW continues to develop superior technology and resources to meet the growing CNG demand around the world. We understand that the economic and environmental benefits of clean fuelling technology are the cornerstones of industrial growth, which keeps us at the forefront of product development. IMW is an ISO 9001:2000 certified company and is committed to providing quality equipment and excellent customer service.

INFOSAFE Inc.

Youngsville, LA 70592, LA, United StatesUpdated Jul 2004

Health, Safety and Environmental Compliance and Training Services Professional personnel travel the globe evaluating workplace hazards and recommending and providing solutions.

INTERTANKO North America

Arlington,, VA, United StatesUpdated Feb 2005

INTERTANKO North America is an association representing independent tanker owners, advocating for safe, environmentally responsible, and efficient tanker operations.

INTERTANKO Oslo

Majorstua, Oslo, NorwayUpdated Apr 2005

INTERTANKO is an association representing independent tanker owners, focusing on promoting safe, environmentally responsible, and efficient tanker operations globally.

Illinois State Geological Surv

Location not listedUpdated May 2026

Illinois State Geological Survey provides geological research and data services, supporting natural resource management and environmental studies.

Inland Technology Inc.

Tacoma, WA, United StatesUpdated Nov 1998

Inland Technology Inc. develops and manufactures environmentally responsible solvents and industrial cleaning products, offering safer alternatives that help maritime and industrial customers reduce hazardous waste generation.

Institute of International Container Lessors (IICL)

New York,, New York, United StatesUpdated Aug 2006

The Institute of International Container Lessors (IICL) is the trade association for the international container and chassis leasing industry. It is active in governmental, regulatory, and technical fields throughout the world. IICL has been active in equipment quality issues, inspector certification, electronic commerce, technical publishing and environmental concerns since 1971. IICL membership engages in leasing marine cargo containers and chassis to ship operators and others on a broad international basis. Members own the great majority of the fleet of the container leasing industry and a large percentage of the world container fleet. Members also own a very high percentage of U.S. leased container chassis. For more information on the IICL or to order IICL technical manuals, please visit our website.